Dashed left edge = started before October 1821 ·
Dashed right edge = ongoing beyond October 1821
Events in October 1821 1
1761 – 1821John Rennie the Elder (1761-1821)Died 4 October 1821, aged 60Scottish civil engineer renowned for his bridges, docks and canals, including the original Waterloo and Southwark bridges in London. His engineering practice was continued by his sons after his death.